<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class UserIdentity extends CUserIdentity
{
	/**
	 * Authenticates a user.
	 * The example implementation makes sure if the username and password
	 * are both 'demo'.
	 * In practical applications, this should be changed to authenticate
	 * against some persistent user identity storage (e.g. database).
	 * @return boolean whether authentication succeeds.
	 */
	 private $id;
	public function authenticate()
	{
		
		/*$users=array(
		
			// username => password
			'demo'=>'demo',
			'admin'=>'admin',
		);*/
		$connection=Yii::app()->db;   // assuming you have configured a "db" connection
		$command=$connection->createCommand()
		->select('username,password,roles')
		->from('user')
		->query();
		$user= array();
		foreach($command as $row)
		{
			//array_push($ngach,$row);
			$user[$row['username']]=$row['password'];
		}
		if(!isset($user[$this->username]))
			$this->errorCode=self::ERROR_USERNAME_INVALID;
		elseif($user[$this->username]!==$this->password)
			$this->errorCode=self::ERROR_PASSWORD_INVALID;
		else
			$this->errorCode=self::ERROR_NONE;
		return !$this->errorCode;
		
		/*
		$record=User::model()->findByAttributes(array('email'=>$this->username));
        if($record===null)
            $this->errorCode=self::ERROR_USERNAME_INVALID;
        else if($record->password!==md5($this->password))
            $this->errorCode=self::ERROR_PASSWORD_INVALID;
        else
        {
            $this->id=$record->id;
            $this->setState('role', $record->role);            
            $this->errorCode=self::ERROR_NONE;
        }
        return !$this->errorCode;
    }
 
    public function getId(){
        return $this->id;
    }
		*/
	}
}
?>